Electric locomotive



No. 610,982. Patented-Sept. 20, I898.

W. S. G'. BAKER.

ELECTRIC LOGOMOTIVE.

(Application filed. Nov. 24, 1894.) (No Model.) 4 Sheets-Sheet l.

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7w QZZEFne J I N0. 6l0,982. Patented .Sept. 20, I898.

W. S. G. BAKER.

ELECTRIC LUGOMOTIVE.

(Application filed Nov. 24, 1894.) (No Model.) 4 Sheets-Sheef2.

No. 6l0,982. Patented Sept. 20, I898. w. s. G. BAKER.

ELECTRIC LDGOMOTIVE.

(Application filed Nov.v 24, 1894.) (No Model.) 4 Sheefs-$heet 3.

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w. s. G. BAKER. ELECTRIC LOCUMOTIVE.

(Application filed Nov. 24, 1894.) 4 Sheets-Sheet 4.

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NITEID STATES PATENT FFICE.

WILLIAM S. G. BAKER, OF BALTIMORE, MARYLAND.

ELECTRIC LOCOMOTIVE.

SPECIFICATION forming part of Letters Patent N 0. 610,982, dated September 20, 1898.

Application filed November 24, 1894:. Serial No. 529,825- (No model.)

To all whom it may concern.-

Be it known that I,WILLIAM S. G. BAKER, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Electric Locomotives, of which the following is a specification.

My invention rel-ates to that class of electric locomotives in which each motor is centered on an axle and is supported on the truckframe. Heretofore the motor has been supported by side bars connected'with the truck frame on opposite sides of the axle and with the motor-casing by trunnions vertically in line with the center of gravity.

The object of the first part of my invention is to so support the motors that not only shall the weight and strain be taken from the axles, but that the side bars may be more readily handled and shall not be in the way when the wheels and axles are removed from the truck or when the motors are being raised or lowered for inspection or repair. In carrying out this part of my invention I provide the truck with a central transverse frame, and I connect supporting side bars to each motor-casing directly under the armature-shaft and also con nect the side bars to the central frame of the truck in such manner that the bars, while being yieldingly supported, may be readily detached from a motor to permit of its being raised or lowered when desired.

The object of the next part of my invention is to so support each motor on the corresponding axle that whatever weight is transferred to the axle may be from the lower section of the motor-casing rather than from the upper section, as heretofore, and also that the bearings which project from the lower section of the casing to the axle shall extend over the axle instead of under it, as heretofore, and thus not only permit of the wheels and axle being readily removed without detaching the motor, but also relieve the bolts which secure the cap or opposite bearing-section from strain or wear.

My invention also involves improved means for raising and lowering the motor and also devices for locking the motor and supporting it entirely on the truck-frame when removing a set of wheels.

In the accompanying drawings, Figure 1 is a plan view of an electric locomotive embodying my improvements. Fig. 2 is a view in longitudinal section on the line 2 2 of Fig. 1. Fig. 2 is a view, partly in side elevation and partly in section, on the line 00 5c of Fig. 1, but on a reduced scale. Fig. 3 is a transverse section on the line 3 3 of Fig. 1. Figs. 4, 5, and 6 are on an enlarged scale. Fig. 4 is a detail view in section on the line 4 4 of Fig. 1. Figs. 5 and 6 are detail views showing the manner of supporting the motor-lowering tackle on the truck-frame. Fig. 7 is a detail plan View showing a modification. Fig. 8 shows a section on the line 8 8 of Fig. 7. Fig.

9 shows a side elevation of a further modification.

The main truck-frame is shown as consisting of side beams A and transverse end bars B. Springs 0, secured to the tops of the beams, are also secured to parallel transverse bars D, on which the car-body is mounted. The side beams A extend over the axle-boxes E, and between the axle-boxes and the side beams are interposed saddles F, to which the lifeguards G are attached. The saddles are formed with housings e for the axle-boxes and are open at their lower ends (2', but are closed by transverse bolts 6 which are readily removable, so that a set of wheels, with their axle, may be quickly and readily removed by simply removing the bolts e on opposite sides of the truck and lifting the truck by jacks sufficiently high to allow the axle to clear the housings and the life-guard.

I have shown my improvements embodied in a four-wheeled truck having a short wheelbase. Between the axles H, I provide a transverse frame I, consisting in this instance of ,a pair of beams J J connected by cross-bars;

and having their ends secured at j to hangers K, attached at it to the side beams A of the truck. Each of the transverse beams is provided with two spring-sockets L, (shown on an enlarged scale in Fig. 4,) and each beam is provided on its upper face with open bearings Z, as shown on an enlarged scale in Figs. 5 and 6, to support a pulley over which passes the rope of the raising and lowering tackle for the motor. Each motor is inclosed in a shell or casing made with upper and lower sections M M, as usual, and provided with a door at for inspecting the commutator, &c. The two sections are hinged together at m;

but instead of supporting or centering the motor on the axle II by brackets extending from the upper section of the casin g I support it or center it by brackets N, extending from the lower section of the casing or from the lower field.

As will be seen by reference to Figs. 2 and 2", the brackets N extend over the axle II, and the caps N, constituting the other sections of the bearings, are secured to the brackets N by bolts n, which may be readily removed. By this construction it will be observed, first, that there is no strain on the bolts, and, second, that whatever weight is borne by the brackets N is transferred from the lower field or lower section of the casing instead of from the upper section, and hence there is no strain on bolts or other connections employed for connecting the upper section of the shell to the lower section. By these improvements it will also be seen that when it is desired to remove a pair of wheels it will be necessary only to remove the caps N, properly support the motor, as hereinafter explained, remove the bolts 6 of the pedestals, and jack up the truck and car-body.

So far as I am aware no motor-truck has ever before been organized in which this could be done so conveniently and so rapidly.

On the under side of each transverse beam J J, I provide a sliding bracket 0, having a socket 0, adapted to fit over a stud or nose 0 on the front of the adjacent motor-casing. The bracket 0 may be slid back and forth in guides 0 hen slid into engagement with the nose 0, it will support the motor in connection with the side supporting-bars, now to be described.

IIeretofore motors have been supported by side bars connected with the motor-frame directly under the armature-shafts and also connected to the truck-frame; but the connection with the truck-frame has involved complicated mechanism and such that the side bars were necessarily removed whenever it was desired to remove a pair of wheels. I obtain all the advantages of a central suspension by my improvements without having the disadvantages of trucks heretofore suspending the motors in this way. 1 provide each motor with a pair of longitudinal side supporting-bars P, each of which is connected at one end with a lug or stud 1), between the front and rear ends of the motor, preferably approximately in the central line of gravity or under the armatureshaft. At its opposite end each side supporting-bar is preferably formed with a hook p, engaging with an eye 19 on the under side of the cross-beam farthest removed from the motor to which the bar is attached. The arrangement is such that the bar P may be readily attached to the cross-beam at the eye and may be as readily removed when swung to the position shown in Fig. 2. Between its opposite ends each side bar is supported under the adjacent transverse beam by means of a bolt Q, extending through a spring-socket L on the side beam and through a spring-socket q in a bar P. Springs Z and q encircle the bolt in the sockets L and g, respectively, and thus provide a yielding connection between the side bars and the central transverse frame of the tr uek. Each bolt is headed at its upper end Z and at its lower end below the side bar is provided with a removable nut Z All of the side bars are connected and supported in this way. Two side bars are used for supporting each motor, and, preferably, the motors are arranged out of line with each other, as shown in Fig. 1, and the side bars are arranged, as shown, to operate without interference with each other. The bolts Q, constitute hangers which suspend the side bars P from the cross-beams below the plane of the axles.

It will now be understood that when it is desired to remove a pair of wheels the motor may be supported entirely by a pair of side bars and by the sliding bracket 0. It will be understood that practically the entire weight is carried by the side bars P and that these are yieldingly connected to the transverse truck-frame, the main' weight being taken at the point of yielding connection with the frame; but part of the weight or strain is taken by the beams at the hooked ends of the side bars, the leverage thus afforded enabling me to use comparatively light springs to do the work. When it is desired to inspect or repair the motor, the truck is run over a pit, as indicated in Fig. 2, the nuts Z removed, and the bolts lifted. A pair of side beams may then be swung down to the position indicated in Fig. 2, and without further manipulation the motor may be lowered, as indicated, and the cover opened or the upper section swung down upon its hinge m, as shown by dotted lines. Before detaching the side bars P, I, as usual, attach loweringtaekle; but I do this in an improved way. As before mentioned, each cross-beam is provided with open bearings i for a pulley 2', over which passes a rope B, one end of which is provided with raising and lowering tackle r and the opposite end of which is provided with a clip 7-, adapted to be readily attached by means of a set-screw r to the nose 0 of the motor-casing.

In Figs. 7 and 8 I have shown a slight modification. Here the transverse bars J J are constructed and mounted in the same manner as hereinbefore described; but only two side bars P are employed for supporting two motors, a side bar on each side of the truck extending from a trunnion p on one motor to a corresponding trunnion p on the motor at the opposite end of the truck. This construction IIO is not so good in many respects as that before described, because it will be necessary to lower both motors when it is desired to inspect or repair one.

In Fig. 9 another modification is shown. The central transverse frame may be similar in general construction to that hereinbefore described; but in this instance I employ two supporting-bars S, connected to brackets 3, directly over the centers of gravity or over the armature-shafts and connect the bars S with the truck-frame by bolts .9, which are encircled by springs 8 Otherwise the construction is the same as hereinbefore described.

I claim as my invention 1. The combination, substantially as hereinbefore set forth, of the truck-frame, a pair of wheels, their axle, a centrally-located electric-motor-supporting frame suspended solely by the side beams of the truck-frame, a motor centered on the axle, longitudinally-arranged motor-supporting bars supported by the central transverse frame and connected with the motor between its front and rear ends.

2. The combination, substantially as hereinbefore set forth, of the truck-frame, the wheels and axles, cross-beams secured to the side beams of the truck between the axles, longitudinally-arranged side bars, hangers suspending them from the cross-beams, a motor centered upon one of the axles and detachably connected with the ends of the side bars.

3. The combination, substantially as hereinbefore set forth, of a truck-frame, the wheels and axles, a motor centered on one of the axles, a transverse frame supported on the side beams of the truck between the axles, longitudinally-arranged side bars suspended from the transverse frame below the plane of the axles, and connected with the motor between its front and rear ends and below the armature-shaft.

l. The combination of a truck-frame, the wheels and axles, a motor centered on one of the axles, the transverse beams secured to the side beams of the truck and located between the axles, the side bars having their ends secured to the motor, and hangers suspending the longitudinal side bars from the transverse beams.

5. The combination, substantially as hereinbefore set forth, of the truck-frame, the wheels and axles, the transverse beams supported on the side beams of the truck, a motor centered on one of the axles, the ends of said side bars extending beyond the transverse beams and detachably connected with the motor.

6. The combination, substantially as hereinbefore set forth, of a truck-frame,the Wheels and axles, a motor centered on each of the axles, a transverse frame supported on the side beams of the truck between the axles, a

pair of side bars supported solely by the transverse frame, and connected with one of the motors at the sides thereof, and another pairof side bars similarly supported and connected with the other motor.

7. The combination, substantially as here inbefore set forth, with the wheels, axles and axle-boxes, of a car-truck frame having a central transverse frame, a motor centered on one of the axles, and longitudinal supporting bars each connected with the motor approximately in its vertical central line of gravity, and each also connected at two points with the central transverse frame of the truck.

8. The combination with an electric motor centered upon an axle of the vehicle, of trunnions upon the outside of the motor, vertically in line with the center of gravity, and side supporting-bars each of which is connected at one end with the trunnions at its opposite end removably connected with the central transverse frame of the truck and between its ends yieldingly connected with said central frame.

9. The combination of the main frame of the truck, a pair of wheels, their axle, an electric motor centered on the axle, side supporting-bars connected to trunnions on the sides of the motor-casing, bolts extending through the transverse frame of the truck and through the side bars, springs arranged in sockets in the side bars and in the truckframe encircling the bolts and nuts on the bolts below the side bars, the organization being such that by removing a pair of nuts and lifting the bolts the side bars may be moved laterally and then swung downward to permit of the motors being lowered.

10. The combination of the truck-frame having one or more transverse bars, a pair of wheels, their axle, an electric motor having bearing-brackets extending over the axle, side supporting-bars connected with the transverse frame of the truck and with-trunnions projecting from the sides of the motor-casing, and a sliding or movable connection between the inner side of the motor and the transverse frame of the truck, whereby the motor may be locked to the frame and supported by the sliding connection and by the transverse bars when the bearings are opened to remove a pair of wheels.

11. In an electric locomotive, the combination with a pair of wheels and their axles, of an electric motor having a shell or casing made in sections, with hearings in the lower section for the armature-shaft bearing-brackets extending from the lower section of the shell over the axle, and caps or lower bearing-sections bolted to the brackets.

12. The combination of the wheels, axles and axle-boxes, a truck-frame having side beams extending over the axle-boxes and provided with housings open at the bottom, removable cross-bolts or devices at the lower ends of the housings, an electric motor centered upon one of the axles and having bear- In testimony whereof I have hereunto subing-hrackets extending over the axle, caps or scribed my name. bearlng-sectlons removably secured to the ,ILLIAM S. G BAKER brackets, longitudinal bars connected to trunnions at the opposite sides of the motor, and Vitnesses:

also removably connected to the central trans- J. PAUL BAKER, Verse frame of the truck. DANIEL WV. POWELL. 

